<template>
  <el-form ref="deptForm" :model="form" :rules="rules" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option v-for="item in list" :key="item.id" :value="item.username" :label="item.username" />
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { getEmployeesSimple, addDepartments, getDepartmentsDetail, editDepartments } from '@/api/departments'
export default {
  props: {
    originList: {
      type: Array,
      required: true
    },
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    }
  },
  data() {
    // 自定义检验规则函数
    const existCodeValid = (rule, value, callback) => {
      // 验证输入的编码value在所有部门中是否存在
      let existCodeList = this.originList.map(item => item.code)
      // 确定是否是编辑状态
      if (this.isEdit) {
        // 根据id将当前编辑的部门id从所有的部门中移除
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      console.log(existCodeList, 'existCodeList')
      if (existCodeList.includes(value)) {
        // 存在 检验失败
        callback(new Error(`部门编码:${value}已存在`))
      } else {
        callback()
      }
    }
    const existNameValid = (rule, value, callback) => {
      // 验证输入的部门名称value在同级不能重复
      let existNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      console.log(existNameList, 'existNameList')
      // 确认是否是编辑的状态
      if (this.isEdit) {
        const pid = this.originList.find(item => item.id === this.id).pid // 根据this.id获取当前对象的pid find 返回一个对象
        const brothers = this.originList.filter(item => item.pid === pid) // 找到所有的兄弟包括自己 filter 返回一个数组
        existNameList = brothers.filter(item => item.id !== this.id).map(item => item.name) // 排除自己并遍历数组
      }
      if (existNameList.includes(value)) {
        callback(new Error(`名称:${value}已存在`))
      } else {
        callback()
      }
    }
    return {
      form: {
        name: '', // 部门名称
        code: '', // 部门编码
        manager: '', // 部门管理者
        introduce: '' // 部门介绍
      },
      rules: {
        name: [
          { required: true, message: '请输入部门的形成', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度是1-50的部门名称', trigger: 'blur' },
          { validator: existNameValid, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入部门的编码', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度是1-50的部门编码', trigger: 'blur' },
          { validator: existCodeValid, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '请选择部门的负责人', trigger: ['blur', 'change'] }
        ],
        introduce: [
          { required: true, message: '请输入部门的介绍', trigger: 'blur' },
          { min: 1, max: 300, message: '请输入长度是1-300的部门介绍', trigger: 'blur' }
        ]
      },
      list: []
    }
  },
  watch: {
    // 解决数据不更新的方式3
    // 简单数据类型,开启侦听
    // id: function(new_value, old_value) {
    //   console.log(new_value, 'new_value')
    //   console.log(old_value, 'old_value')
    //   this.loadDepartmentsDetail()
    // }
    // 复杂数据类型 可以开启深度侦听,页面打开需要立即加载
    // handler:function(new_value, old_value){
    //     console.log(new_value, 'new_value')
    //   console.log(old_value, 'old_value')
    // },
    // 开启深度侦听
    // deep:true
    // //立即加载
    // immediate:true
  },
  created() {
    this.loadEmployeesSimple()
    if (this.isEdit) {
      this.loadDepartmentsDetail()
    }
  },
  methods: {
    restForm() {
      this.$refs.deptForm.resetFields() // 清空表单
    },
    // 加载员工详情数据
    async loadDepartmentsDetail() {
      try {
        const res = await getDepartmentsDetail(this.id)
        console.log(res, 'getDepartmentsDetail')
        this.form = res.data
      } catch (error) {
        console.log(error)
      }
    },
    // 获取员工列表
    async loadEmployeesSimple() {
      try {
        const res = await getEmployeesSimple()
        console.log(res, 'getEmployeesSimple')
        this.list = res.data
      } catch (error) {
        console.log(error)
      }
    },
    // 新增子部门
    async doAdd() {
      try {
        const res = await addDepartments({ ...this.form, pid: this.id })
        console.log(res, 'addDepartments')
        // 子传父 关闭弹层 渲染页面
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    // 实现编辑功能
    async doEdit() {
      try {
        const res = await editDepartments(this.form)
        console.log(res, 'editDepartments')
        // 子传父 关闭弹层 渲染页面
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    // 确认按钮
    hSubmit() {
      // 兜底校验
      this.$refs.deptForm.validate((valid) => {
        // 检验失败
        if (!valid) return
        // 如果是true 就编辑 否则就新增
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    // 取消按钮
    hCancel() {
      // 关闭弹层
      this.$emit('close')
    }
  }
}

</script>
